Arsène Wenger will discover tomorrow how his complaint about Manchester United using "anti-football" tactics has gone down with Sir Alex Ferguson when the two managers come face to face while still nursing grievances from last weekend's controversial fixture at Old Trafford.

Wenger and Ferguson will be in Nyon for the next two days as part of Uefa's elite club coaches' forum, when it could conceivably be stiff handshakes all around between the representatives of the English clubs. Rafael Benítez, of Liverpool, has confirmed he will travel to Switzerland at a time when his relationship with Ferguson appears to be irreparably damaged.

Ferguson and Benítez have barely had a good word to say about each other since their spectacular fall-out last season, whereas Ferguson is angry and disappointed about the way Wenger has attacked United since Arsenal's 2-1 defeat in Manchester last Saturday. Wenger's comments about United's perceived foul play surprised the management at Old Trafford where there is a sense that he has broken a gentleman's agreement between him and Ferguson to refrain from criticising each other's clubs.

Relations between the two old rivals have significantly improved over the last two seasons and Ferguson felt they parted at Old Trafford on good terms, having a cordial conversation and shaking hands before Wenger boarded the Arsenal team coach.

In his television interviews Ferguson had also criticised the referee Mike Dean's decision to banish Wenger from the dugout in the final moments of the match for kicking a water bottle in frustration. He was shocked subsequently to discover Wenger had been so critical of United's tactics, the Arsenal manager describing the culture of systematic fouling as a "more urgent" issue than players diving to win free-kicks. Wenger spoke of the Premier League champions making "deliberate fouls" and identified one player, almost certainly Darren Fletcher, as being "anti-football" because he was on the pitch "to make repeated fouls".

While Wenger's remarks were aimed primarily as criticism of Dean and in defence of his own players at a time when Eduardo and Emmanuel Eboué have been accused of diving, Ferguson was still taken aback at a time when he has made a conscious effort to get on better with his former adversary.

Sir Alex was particularly aggrieved about the implied criticisms of Fletcher. Wenger complained that one United player had made 20 fouls without being booked whereas the official statistics say that Fletcher gave away six free-kicks, the same number as the Arsenal's Robin van Persie.